This might actually be in WA state, but if it is, it's pretty close to the border. I've heard tale of a waterfall somewhere along the North Fork of the Wenaha. A ranger for the Umatilla NF told me that there was a waterfall a little ways off Round Butte Trail (#3235), which would probably put it closer to the fork of the Wenaha in Oregon. She'd never actually been there, so she couldn't give me good directions. But a Google search brings this up http://fishingandhiking.com/2011/09/12/ ... -6-7-2011/ which places it further North in WA state.
Maybe there's more than one waterfall along the North Fork Wenaha? Has anybody heard or know anything about this?